Chapter 45 Drugs Used to Treat the Muscular System

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Chapter 45  Drugs Used to Treat the Muscular System

 

 

Complete Chapter Questions And Answers
 

Sample Questions

 

MULTIPLE CHOICE

1. A patient who has undergone a lengthy surgical procedure under general anesthesia is unable to breathe on his own following the procedure. Which drug will the nurse expect to be administered as an antidote to the neuromuscular blocking agent?
A.
Dantrolene (Dantrium)
B.
Neostigmine methylsulfate (Prostigmin)
C.
Ether
D.
Baclofen (Lioresal)

ANS: B

Feedback
A
Dantrolene is a direct-acting skeletal muscle relaxant given for the treatment of neuroleptic malignant syndrome associated with the use of antipsychotic agents.
B
Neostigmine methylsulfate is an antidote to neuromuscular blocking agents. Additional measures to implement include artificial respirations with oxygen and atropine sulfate for bradycardia and hypotension.
C
Ether is a general anesthetic.
D
Baclofen is a skeletal muscle relaxant.

DIF: Cognitive Level: Application REF: 714
TOP: Nursing Process Step: Implementation
MSC: NCLEX Client Needs Category: Physiological Integrity

2. What is the reason for paraplegic patient to receive baclofen (Lioresal)?
A.
It interrupts reflexes at the level of the spinal cord.
B.
It acts directly on the skeletal muscles to reduce spasticity.
C.
It interrupts transmission of impulses from motor nerves to muscles at the skeletal neuromuscular junction.
D.
It produces generalized mild weakness of skeletal muscles and decreases the force of reflex muscle contractions.

ANS: A

Feedback
A
Baclofen is a gamma-aminobutyric acid derivative that interrupts polysynaptic reflexes at the level of the spinal cord.
B
Baclofen does not appear to act directly on the skeletal muscles.
C
Interrupting transmission of impulses from motor nerves to muscles at the skeletal neuromuscular junction is the mechanism of action of neuromuscular blocking agents.
D
Producing generalized mild weakness of skeletal muscles and decreasing the force of reflex muscle contractions is the mechanism of action of dantrolene.

DIF: Cognitive Level: Comprehension REF: 713
TOP: Nursing Process Step: Implementation
MSC: NCLEX Client Needs Category: Physiological Integrity

3. A patient taking antipsychotic medication for schizophrenia is admitted with a temperature of 106° F. The admitting diagnosis is neuroleptic malignant syndrome secondary to antipsychotic medication. Which drug is indicated in treatment of this condition?
A.
Edrophonium (Tensilon)
B.
Dantrolene (Dantrium)
C.
Baclofen (Lioresal)
D.
Metaxolone (Skelaxin)

ANS: B

Feedback
A
Edrophonium is an antidote for neuromuscular blocking agents.
B
Dantrolene, a direct-acting skeletal muscle relaxant, is used to treat neuroleptic malignant syndrome associated with the use of antipsychotic agents.
C
Baclofen is a skeletal muscle relaxant used for the treatment of muscle spasticity resulting from multiple sclerosis and cerebral palsy.
D
Metaxolone is used for muscle spasms.

DIF: Cognitive Level: Comprehension REF: 713
TOP: Nursing Process Step: Implementation
MSC: NCLEX Client Needs Category: Physiological Integrity

4. In the intensive care unit, the nurse is taking care of a patient who is on a ventilator and is receiving succinylcholine (Anectine). Which is a priority nursing diagnosis for this patient?
A.
Pain
B.
Disturbed Body Image
C.
Risk for Injury
D.
Self-Care Deficit

ANS: A

Feedback
A
Pain is the highest priority, according to Maslow’s hierarchy of needs. Succinylcholine, a neuromuscular blocking agent, is used to paralyze muscles while a patient is on a ventilator. Neuromuscular blocking agents do not relieve pain.
B
Disturbed Body Image is not a priority for this situation, although it does apply.
C
Risk for Injury is not as great a priority for this situation.
D
Self-Care Deficit is not as great a priority for this situation.

DIF: Cognitive Level: Application REF: 714
TOP: Nursing Process Step: Diagnosis
MSC: NCLEX Client Needs Category: Physiological Integrity

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